Bayer MaterialScience says it has completed a global switch in chlorine production to electricity-saving membrane technology. In addition, Bayer is also at the halfway point of a test phase for another pioneering process - known as the oxygen depolarized cathode (ODC) process - that would further reduce energy consumption in the production of chlorine. Bayer has 1.9 million m.t./year chlorine capacity, making it one of the largest producers of chlorine. It makes chlorine at four sites in Germany, one in the U.S. and one in China. At its Krefeld-Uerdingen site in...